RFR: 8262819: gc/shenandoah/compiler/TestLinkToNativeRBP.java fails with release VMs

[Jie Fu]

Hi all,

Please review this trivial fix to the failure of TestLinkToNativeRBP.java with release VMs.

Only -XX:+UnlockDiagnosticVMOptions is added for the test.

Thanks.
Best regards,
Jie

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Commit messages:
 - 8262819: gc/shenandoah/compiler/TestLinkToNativeRBP.java fails with release VMs

Changes: https://git.openjdk.java.net/jdk/pull/2786/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2786&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8262819
  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2786.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2786/head:pull/2786

PR: https://git.openjdk.java.net/jdk/pull/2786